[Snyk] Security upgrade python from 3.10-slim to 3.13-rc-slim

[Niraj-Dilshan]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• Dockerfile

We recommend upgrading to python:3.13-rc-slim, as this image has only 36 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	221	CVE-2023-5981 SNYK-DEBIAN12-GNUTLS28-6062100	No Known Exploit
	221	Improper Check for Unusual or Exceptional Conditions SNYK-DEBIAN12-OPENSSL-6048820	No Known Exploit
	221	Improper Check for Unusual or Exceptional Conditions SNYK-DEBIAN12-OPENSSL-6048820	No Known Exploit
	221	CVE-2023-47038 SNYK-DEBIAN12-PERL-6085273	No Known Exploit
	500	Integer Overflow or Wraparound SNYK-DEBIAN12-ZLIB-6008963	No Known Exploit

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